Sheet metal working machine



Feb. 8, .1944. E. G. HACKBARTH SHEET METAL WORKING MACHINE Filed June 5, 1943 3 Sheets-Sheet 1 Feb. 8, 1944. Q HACKBARTH 2,341,215

SHEET METAL WORKING MACHINE Filed June 5, 1943 3 Sheets-Sheet 2 5% ww mg 1944- E. ca. HACKBARTH 2,341,215

SHEET METAL WORKING MACHINE Filed June 5, 1943 3 Sheets-Sheet 3 Patented Feb. 8, 1944 marten STATES T ENT O FFICE 3 Claims;

has for an object to produce a machine that is durable in construction, efiicient in operation, and relatively inexpensive to manufacture.

Still another object of the invention is to produce'a sheet metal machine wherein thehousing is formed of two parts, and these two parts, when bolted together, form a strong and durable construction. In fact, when the two-parts of the casing are assembled and bolted, the structure becomes substantially integral.

Still another object of the invention'is to providea beading machine consisting of a casing formed of two parts, which casing has-mounted therein the shafts and theirrespectivegears, and due to the forming of the casing in two parts; the matter of assembling the shafts and gears is greatly simplified.

Still another object of the invention is to provide a beading machine wherein the horn is an integral part of the lower half of the casing, and wherein the overhanging arm is an integral part of the upper part of'the casing, so that when the two parts of the casing are bolted together, the horn and arm are rigidly held'with' relation to eachother.

Still another object of the inventionis to provide a heading machine wherein the casing is formed in two parts, the overhanging arm' being integral with one portion of the casing, and the horn being integral with the other'part of the casing, and the two parts of the casing in turn being provided with certain webs or partitions which form bearings for the rear ends of the shafts that are mounted within thecasings;

Still another object of the invention is to providea sheet metal working machine wherein the casing is formed of an" upper and lower half which may be readily bolted together after-the shafts and gears have'been insertedwithin'their respective parts of the casing; to thus provide a machine that will be rigid in construction and withstand the strains naturallyincident with the work to be performed.

Still another object of the invention i's to provide a beading machine wherein the-casing is formed of twoparts, one of which is provided with an integralhorn and the other of'whichis provided with an integral overhanging arm-,:. and in which casing are to be provided the two actuating shafts together with a third shaft, so that therate of'turning the heading or forming jr'oll's on the end may be slightly reduced in speed; but calling for less manual power.

With these and other objects in view, the invention consists in certain new and; novel arrangements and combination of parts that will she hereinafter more fully described and pointed out in the claims.

Referring now to the drawings showing a preferred embodiment,

Fig. 1 isa side elevational view of my improved sheet metal machine, parts of the casing being broken away for the sake of clearness of illustration;

Fig. 2 is a fragmentary horizontal longitudinal sectional view;

Fig. 3- is a fragmentary vertical sectional view taken on line 3-3 of Fig. 1;

Fig. 4 is a similar view taken on line 4-4 of Fig. 1;

Fig. 5 is a similar sectional view taken on line 5-5 of Fig. 1;

Fig. 6 is a vertical sectional view taken onlin'e 6-6 ofFig. 1;

Fig. 7 is a sectional view taken on line 1-1 of Fig. 1;

Fig. 8 is afragmentary vertical longitudinal sectional view of the outer end ofthe overhanging arm and horn, showing the beading rolls in elevation;

Fig. 9 is a bottom plan view of the overhanging arm and its integral half of the casing;

Fig. :10 is a top plan View of the horn and its integral part of casing; and

Fig. 11 is a rear elevational view of the machine showing the two halves of the casing in their assembled position and the shafts removed for the sake of clearness.

Referring now more particularly to the several views and for the moment to Figs. 1 and 10, there may be seen the horn I, which is an integral part of the lower half of the casing 2. This horn and its casing may also be seen in detail inFigs. 2 and 4, while the shape of its rear endmay also be seen from Fig. 11.

It will be noticed that the casing and horn have flat upper'surfaces 3 and 3' respectively, while the side walls l and i respectively are. in the form an an inverted Gothic arch, thus presenting. a streamlined appearance and at the sametime providing av saving of metal. 1

The casingis providedwith a forward wall 5, a chamber 6, the partitionwall 1 extending transversely of the casing, and the chamber 8, as may be clearly seenin Fig. 10. In'otherwords, there is v a. hollow casing provided with walls having openings to form bearings and also chambers in whichwill be housed the gears that are used to; transmit the power from the shaft which is actuated to'the other respective shafts.

Thehorn I is, of course, hollow, so that ashaft to be hereinafter mentioned may extend from the rear of the casing to' the forward end of the hornon which-will besecured one of the form in'g'roll's; The casing is drilled and tapped as at 3 for the reception of bolts and screws, which will be shortly mentioned.

Thus it will be seen that by casting the horn and lower half of the casing as an integral structure, great strength and rigidity is obtained. Furthermore, when this lower half of the casing is securely bolted to the upper half of the easing, as will be shortly mentioned, the entire casing, horn and overhanging arm becomes structurally integral so that the shafts which actuate the turning rolls will be well supported in their respective enclosures.

Still referring to Figs. 1 and 2, there may be seen the short bore l within the forward wall 5 of the chamber 6 to form a bearing, and likewise the aligned aperture H in the transverse wall 1, so that the actuating shaft [2 may rest at its forward end and about midway of its length in these bearing surfaces. The shaft I2 is also provided with a circumferential groove IS in which extends the nose I! of the threaded pin l8, which may be seen in Fig. 4. This pin extends from the outer surface of the casingand may be locked in position by the nut Hi. There may also be seen the gear mounted on this shaft, which gear is housed within the chamber 8. The end of the shaft I2 may be fiatted as at 2|, so that the handle 22 may be quickly fitted thereon, then locked in position by the bolt 23 (see Fig. 1).

In this instance the gear 20 is permanently secured on the shaft I2 and the shaft with its gear may be placed in position and locked against longitudinal movement by the pin l8, as is well understood.

Also mounted within the lower half of the casing may be seen the shaft 24 which is likewise provided with a slightly enlarged rear hearing surface 25, together with a forward bearing surface 26, the bearing surface 25 fitting within an aperture 21 in the rear wall 1 and the forward bearing surface fitting within an accommodating bearing surface 28 at the forward end of the horn.

The shaft 24 is inserted from the front until the rear end extends into the chamber 8 and then the mating gear is inserted in the chamber 8 and the shaft again brought rearwardly through the hub of the mating gear 30 and when in position is pinned to its shaft 24 as at 3|. The end of the shaft 24 is also fiatted so that the andle may be attached to this shaft.

It might be mentioned that from the bottom of the casing depends a relatively large stem 32 which is adapted to be fitted in a standard (not shown) that is usually supplied for machines of this type.

On the opposite sides of the horn there may be seen the small longitudinal extending V-shaped grooves 33 so that the clamp 34 with its two pins 35 extending into these grooves maybe moved along the horn to act as a guage. In this manner the position of the beading or edging may be controlled.

On the outer end of the shaft 24 will be pinned a lower forming roll 36 that is to cooperate with the upper forming roll shortly to be mentioned.

Having thus briefly described the horn and the lower half of the casing together With its shafts, reference will now be made to the upper half of the casing and its overhanging arm and included parts.

Referring for the moment to Figs. 1, 2 and 9, there may be seen the upper half of the casing 3'! together with its integral overhanging arm 5|. The casing 31 is flat on its under surface, so that when the two casings are ground, fitted and bolted together they will provide substantially an integral structure. The vertical apertures 38 are provided for the necessary bolts and screws and these apertures, of course, are in registry with the apertures 9 in the lower half of the casing. It may be seen from Fig. 1 that the metal about the top of these apertures 38 is sunk or, in other words, when the casing is cast provision is made for the bolt heads and screw heads, so that they extend below the top surfaces of the arm and the casing to provide a steamlined appearance, and also a flat surface against which the bolt or screw heads can be pulled.

This upper half of the casing .also has the forward wall 68, the chamber 39, the partition 40 and the rear chamber 4 I.

The overhanging arm is hollow, as may be seen at 42 and its side walls are cast inwardly as at 43, as may be seen in Fig. 6. The forward end of the arm is in the form of an inverted U- shaped yoke 43', 'in which rides the bored block 44 in which is to be mounted the forward end of the shaft 45. r

There is the usual small screw threaded handle 46 to bear against the upper surface of the block 44 and likewise the casing is drilled and countersunk at 41 for the screw 48 which is threaded into the upper surface of the block 44. There may be seen the spring 49 which bears against the screw head and against the bottom wall of the countersunk aperture formed in the upper arm to normally exerta tension on the block 44, so that by turning the handle 45 in one direction the block 44 and the shaft 45 may be raised at its outer end by spring tension, while the turning of the handle in the other direction will lower the outer end of the shaft.

This shaft 45 is pivoted near its rear end, as is the usual practice, so that the forming rolls may be adjusted with relation to each other.

On the outer end of the shaft 45 will be seen the upper forming roll 50 which, of course, c0- operates with the lower roll 36, and it goes without mention that these rolls will be changed or substituted, depending upon the type of work to be done.

From Fig. 1 it will be seen that the bottom surface of the overhanging arm 5| is slightly spaced with relation to the upper surface of the horn I and the heretofore mentioned clamp 34, by being slightly dished at center, may clear the shaft 45 Within the arm 5|.

In the wall 40 of the upper half of the casing there is formed an opening 52 to receive the collar 53 that is mounted near the rear end of the shaft 45, and this collar 53 is bored and counterbored as at 54 to accommodate the points of the pivot pins 55 which extend from the opposite sides of the upper half of the casing, as may be conveniently seen in Fig. 4.

On top of the casing there may be seen the oil passage 56 that extends over the counterbored channel 51 within the collar 53, so that this collar or bearing and shaft may be conveniently oiled.

This collar 53 abuts against the flange 58 on the shaft 45, while to the rear of the collar or bushing is the mating gear 59 which is pinned as at 60 on the shaft 45, which gear meshes with the gear 30 mounted on the shaft 24 heretofore mentioned.

To mount this shaft in the overhanging arm and its casing, the shaft is slipped in through the casing until such time as the collar and gear, which may be held in the chamber 4|, can be slipped on the shafts. The gear is then pinned in place, and the pivot pins passed within the respective counterbored openings 54.

After the shaft is thus mounted in position, the lag screws 6| will be passed through the apertures 38 and into the threaded apertures 9 in the lower casing, as may be seen in Figs. 3 and 5. Also the bolts 62 will be passed through the rear apertures of the casing and into their threaded apertures 9 in the lower casing, to thus securely fasten the two halves of the casing and rigidly hold the horn and overhanging arm and the respective shafts in their assembled position.

The handle 22 may be temporarily mounted on the rear end of the upper shaft 45, and the work (not shown) placed between the rolls will be fed in the one direction. However, some workmen like to have the work feed in an opposite direction and in this instance, the handle may be temporarily secured to the shaft 24.

Again, if thicker stock is to be worked on, requiring more turning force, the handle may be secured to the stub shaft l2 which, it will be remembered, carries a gear having a less number of teeth than the other two aforementioned gears.

Thus it will be seen that there are three drives furnishedclockwise, anti-clockwise and a reduction drive (clockwise) for 22\-gauge material.

Provision is made for supplying oil to the rear bearings of the two lower shafts by providing sloping oil passageways 63, as may be seen in Fig. 4.

Before the two parts are assembled, grease may be placed on the respective gears, and if necessary, oil can be shot from the rear of the casing to these gears.

From the foregoing it will be seen that I have provided a sheet metal working machine wherein the casing, overhanging arm and horn consists of but two parts, in which are housed the respective shafts and gears. After the two partsthat is, the upper and lower casing-are rigidly bolted together, they will form substantially an integral structure.

n the other hand, it is but the matter of a few minutes to remove the bolts and dis-assemble the machine if it is desired to substitute a new gear or a new shaft.

Furthermore, the parts offer no difiiculty in casting and the machine work is reduced to a minimum.

It will be noticed that all of the parts are enclosed and that the upper housing, with its square shoulders, together with a semi-oval construction of the lower half of the casing, presents a machine of streamlined appearance and at the same time is sturdy in construction.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a sheet metal working machine, a hollow casing made up of an upper half and a lower half, the upper casing having an integral overhanging arm and the lower casing having an integral horn, means for rigidly fastening the casings into a substantially functionally integral structure, a shaft pivotally mounted in the upper half of the casing and extending through said arm at its front and through an opening in the casing the horn and its rear end also extending through an opening in the rear of its casing, a stub shaft also rotatably mounted in the lower half of the casing, intermeshing gears on said shafts and situated in the said casings, the gear on the stub shaft having a less number of teeth than the gears on the other two said shafts, transversely extending walls in said lower casing, bearings formed in said walls to support the rear ends of the shafts in said lower casing, and the two upper shafts adapted to be moved longitudinally of their respective casings when being assembled whereby the gears may be slipped on the rear end of the shafts before said casings are secured to each other.

2. In a sheet metal working machine, a casing formed of an upper half and a lower half, an overhanging arm integral with the upper half of the casing and a horn integral with the lower half of the casing, means for bolting the casings together to form a substantially rigid structure, a pivoted rotatable shaft mounted in the upper half of the casing and arm, and a rotatable shaft mounted in the lower casing and horn, both of said shafts adapted to carry co-operating work rolls, a stub shaft also mounted in the lower half of the casing, the said casings provided with openings in the rear through which extend the rear ends of the three respective shafts, mating gears on the two first-mentioned shafts and a pinion gear on the stub shaft, means for selectively rotating the said shafts whereby a clockwise rotation of the upper shaft will turn the rolls in one direction, a clockwise rotation of the second haft will revolve the rolls in an opposite direction, and a rotation of the stub shaft will revolve the two first-mentioned shafts at a reduced rate of speed, and means for quickly adjusting the spaced relationship between the two said work rolls.

3. A sheet metal working machine including a casing made up of an upper half and a lower half securely bolted to each other to form a functional integral structure, an overhanging arm formed integral with the upper half of the easing, a horn formed integral with the lower half of the casing, a rotatable shaft provided with a gear, said shaft being pivotally mounted in the upper half of the casing and extending through said arm and adapted to carry a forming roll at its one end and an operating handle at its other end, a rotatable shaft in the lower half of the casing provided with a mating gear, said shaft likewise extending through said horn and said shaft adapted to support a cooperating roll at its outer end and also support a handle at its inner end, a stub shaft also mounted in the lower half of the casing and having a gear provided with a less number of teeth than the aforementioned gears and said gear meshing with one of the aforementioned gears, whereby a turning of the handle when it is on the upper shaft will feed the work through the machine in one direction while a turning of the handle in the same direction when placed on the second shaft will feed the work through the machine in the opposite direction and a rotation of the stub shaft by tuming the handle when on said stub shaft will feed the work through the machine at a reduced rate of speed.

EDWARD G. HACKBARTH. 

